How to apply a fill color to a text object in Illustrator?

I try to recolor text object. The color PANTONE 185 C is present in the swatches and if object type is CompoundPathItem then it works. But when a text object selected then it lost a color (that is, it turns into an object without fill).

#target illustrator

var doc = app.activeDocument;
var swatches = doc.swatches;

if (doc.selection.length > 0) {
    var targetItem = doc.selection[0];

    if (targetItem.typename == "PathItem" || targetItem.typename == "CompoundPathItem") {
        var colorFound = false;

        for (var i = 0; i < swatches.length; i++) {
            if (swatches[i].name == "PANTONE 185 C") {
                alert("PANTONE 185 C");
                targetItem.fillColor = swatches[i].color;
                colorFound = true;
                break;
            }
        }

        if (!colorFound) {
            alert("PANTONE 185 C not found in Swatches");
        }
    } else {
      
      alert("apply fill color");
      var textRange = targetItem.textRange;
      applyFillColor(textRange, swatches[i].color);
      
    }
    
} else {
    alert("select an object");
}

function applyFillColor(textRange, color) {
    for (var i = 0; i < textRange.characters.length; i++) {
        textRange.characters[i].fillColor = color;
    }
}